Hi all, recently I'm dedicated to the monitoring of faint Be stars with a low power resolving spectrograph, with the aim to verify any large changes.
I would like to report a possible h-alpha line evolution (decrease) for V361 Per. Here you find a comparison with a previous BeSS spectrum.
Can anyone confirm it with a better resolution spectrum?
Thank you.
Umberto
Be star V361 Per h-alpha evolution
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Re: Be star V361 Per h-alpha evolution
Ciao Umberto, I can confirm the H-alpha line intensity decreasing with a R ~6000 (noisy) spectral profile:
A profile comparison:
You have discovered several faint Be profile changes, congratulations!
Paolo
A profile comparison:
You have discovered several faint Be profile changes, congratulations!
Paolo
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Re: Be star V361 Per h-alpha evolution
I have been waiting 2 week for clear skies to confirm this, but I see Paolo beat me to it
Anyway,here is a second confirmation at R ~5500. Very similar to Paolo's, perhaps even showing the narrow emission lines in the core of the weak H alpha absorption line
Robin
Anyway,here is a second confirmation at R ~5500. Very similar to Paolo's, perhaps even showing the narrow emission lines in the core of the weak H alpha absorption line
Robin
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- _v361per_20150308_823_Leadbeater.png (6.38 KiB) Viewed 5016 times
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
http://www.threehillsobservatory.co.uk
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Re: Be star V361 Per h-alpha evolution
Excellent (a fine entry for next Valerie Be stars new letter) !
Christian
Christian
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Re: Be star V361 Per h-alpha evolution
Thank you very much for your confirmations! Christian, I'm glad if my observation has been interesting.
Umberto
Umberto